The Senate narrowly confirmed DeVos last week despite a firestorm of complaints about her nomination. The billionaire philanthropist is best known as a vocal advocate for charter schools and vouchers, which critics see as a way to undermine public education.

She had a rocky confirmation hearing, during which she seemed to not be familiar with critical education issues, such as the federal Individuals with Disabilities Act.

Several hours after the first Tweet was posted, the Education Department re-posted the message with the correct spelling and apologized for the mistake. But the apology included another mistake, this time a grammatical error.

"Our deepest apologizes for the earlier typo," the department tweeted. The department has since deleted and corrected the tweet.